<!DOCTYPE html>  
<html lang="en" class="app">  
<head>    
 <@head/>  
</head>  
<body class="">  
    <@header/>  
    <br/>  
    <br/>  
    <br/>  
    <br/>  
       middle  
    <br/>  
    <br/>  
    <br/>  
    <br/>  
    <@footer/>  
</body>  
</html> 